Examination of medical instruments in stomatology departments of hospitals in Zhuhai City found that the positive rates of HBsAg and HBV-DNA were 12.0% and 8.0% respectively, of which, the positive rates of hand piece were 21.8% and 16.4% respectively.

• 经检测，珠海市医院口腔科医疗器械HBsAg与HBV－DNA阳性率分别为12.；0%25与8